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Effects of sediment transport on the...

Wynne, Kristina Klos.

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Effects of sediment transport on the New Zealand mud snail in Boulder Creek, Colorado.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Effects of sediment transport on the New Zealand mud snail in Boulder Creek, Colorado./
Author:	Wynne, Kristina Klos.
Description:	66 p.
Notes:	Source: Masters Abstracts International, Volume: 45-02, page: 0794.
Contained By:	Masters Abstracts International45-02.
Subject:	Biology, Ecology. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1439439
ISBN:	9780542969188

Effects of sediment transport on the New Zealand mud snail in Boulder Creek, Colorado.
Wynne, Kristina Klos.

Effects of sediment transport on the New Zealand mud snail in Boulder Creek, Colorado. - 66 p.

Source: Masters Abstracts International, Volume: 45-02, page: 0794.

Thesis (M.A.)--University of Colorado at Boulder, 2006.

The goal of this study is to assess the relationship between the density of New Zealand mud snails (NZMS) and sediment transport in Boulder Creek, CO. Dimensionless shear stress, tau*, was estimated at three sites using a one-dimensional flow model. Frequency of sediment entrainment was evaluated for two values of critical dimensionless shear stress, tau* c. Changes in NZMS populations with discharge were determined and compared to average and lateral estimations of stress. While the data suggests there may be trends in the relationship between NZMS density and sediment transport, it is not clear that sediment transport governs the density and location of the NZMS. If the snails do use areas of lower stress as refugia, only flows that completely mobilize the bed (tau* > 1.5 tau c*) may reduce the NZMS population in Boulder Creek. Such flows occur one to two days/year at sites where snails are present.

ISBN: 9780542969188Subjects--Topical Terms:

1017726
Biology, Ecology.

Effects of sediment transport on the New Zealand mud snail in Boulder Creek, Colorado.
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100 1 $a Wynne, Kristina Klos. $3 1923188
245 1 0 $a Effects of sediment transport on the New Zealand mud snail in Boulder Creek, Colorado.
300 $a 66 p.
500 $a Source: Masters Abstracts International, Volume: 45-02, page: 0794.
500 $a Adviser: John Pitlick.
502 $a Thesis (M.A.)--University of Colorado at Boulder, 2006.
520 $a The goal of this study is to assess the relationship between the density of New Zealand mud snails (NZMS) and sediment transport in Boulder Creek, CO. Dimensionless shear stress, tau*, was estimated at three sites using a one-dimensional flow model. Frequency of sediment entrainment was evaluated for two values of critical dimensionless shear stress, tau* c. Changes in NZMS populations with discharge were determined and compared to average and lateral estimations of stress. While the data suggests there may be trends in the relationship between NZMS density and sediment transport, it is not clear that sediment transport governs the density and location of the NZMS. If the snails do use areas of lower stress as refugia, only flows that completely mobilize the bed (tau* > 1.5 tau c*) may reduce the NZMS population in Boulder Creek. Such flows occur one to two days/year at sites where snails are present.
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